I'd love a large (7" screen or bigger) tablet with 2 full-size USB ports, 2 full-size SD slots and video out (maybe composite + HDMI). And the killer feature would be the incredible battery life, far more than any netbook.

It could even have a keyboard/dock, which would turn it into a full-fledged netbook, except for the ability to run x86 code.

You couldn't carry it in a pocket, but it'd be convenient in bed or on the couch.